Regulating-valve.



T..M. WILKINS. REGULATING VALVE. APPLICATION FILED AUGJM, 1908.

Patented Dec. 7, 1909.

UNITED STATES A ENT OFFICE.

THOMAS M. WILKINS,

OF EAST RANDOLPH, NEW YORK, ASSIGNOR T0 CHARLES S. GROVER, OF JAMESTOWN, NEW YORK.

REGIiLATINQ-VALVE.

7 Specification of Letters Patent.

Patented Dec. 7, 1909.

Application filed August 24, 1908. Serial No. 450,085.

To all whom it may concern:

Be it known that I, THOMAS M. WILKINS, a citizen of the United States, residing at East Randolph, in the county ofCattaraugus and State of New York, have invented new and useful Improvements in Regulating-Valves, of which the following, taken in connection with accompanying drawing, is a full, clear, and exact description.

The invention relates to valves for controlling or regulating the steam for stoker and force draft engines; and the object of my improvement is to provide a valve which may be set withgreat accuracy so as to give the exact pressure, desired, and while so regplating the pressure it will also allow a su cient quantity of the motive fluid to pass through the valve to keep a stoker engine, for example, in motion.

In the drawings, Figure 1 is a sectional view of the valve showing the construction of the parts, including the inclosed multiple diaphragm and the adjustment therefor. Fig. 2 is a sectional view of the double valve, showing the opening therethrough and the pin attachment of the valve stem.

Similar numerals refer to corresponding parts in both views.

The numeral 10 indicates the valve casing which is formed with an inlet port 11 and an outlet port 12. Within the interior of the casing 10 one side of said casing around the outletport 12 is projected into the space therewithin so as to form a bulb-like projecting partition 13. Partition 13 has the valve seats 14 and 15 formed through. directly opposite one another and in line with the center of opening 20. Preferably a suitable double valve 17 is provided with connections of exactly the right length to fit said valve upon valve seats 14 and 15. A single valve or any valve having a suitable stem might be used with my regulating device. A small hole 18 is drilled lengthwise into the center of valve 17 about one-half its length and then turns at right angles to the surface of the connecting portion of the valveso as to allow the motive fluid to ass from the inlet apartment of the valve nto the outlet portion so thata sufiicient quantity of the motive fluid is continually passing through the valves to keep a stoker engine constantly in motion.

A threaded opening is provided in casing 10 directly opposite opening 20, which has a screw cap 16 therefor, said threaded opening providing means for inserting valve 17. A similar threaded opening is provided in casing 10 on the opposite side to receive the threaded extension 21 of casing 19 for the multiple diaphragm 25. Multiple diaphragm 24 is connected to valve 17 by means of valve stem 23, which is attached at one end to valve 17 by means of a suitable pin. The other end of the valve stem is screwed into the metallic piece 29, which forms the first of the supports for the thin metal disks which compose the diaphragms 21. The thin metal disks are connected around the peripheries centrally attached to short nipples. These thin disks are preferably made of a resilient metal, German silver, being preferred. At the opposite end of the multiple diaphragm the last thin metal disk is attached to one end of a tube 26, which is threaded on its outer side. A cap 22 for casing 19 has a threaded opening which fits onto the outer side of tube 26 and also a flanged projection, which is threaded and screws onto the outer edge of casing 19, thereby inclosing said casing and making it steam tight. A rubber gasket is provided around tube 26 and the --lock nut 27 is screwed onto the same thereby holding the packing 37, and at the same time, holding cap and the casing firmly in place.

A tube 30 is screwed onto the outer end of tube 26, which tube 30 has an outer cap 34 with the set nut 35 extending therethrough. The outer end of rod 28 is formed with the flange 31 against which a coiled spring 32 bears. The other end of coiled spring 32 bears against a flanged plug 33 and set nut 35 in cap 34 bears against the outer side of plug 33. A hole 36 is provided in tube 30 to admit the air to the multiple diaphragm and also to form a drip hole should the multiple diaphragm ever leak and liquid enter said diaphragm. 'The opening through the tube 26 and the multiple diaphragm, which is indicated by a numeral 2.), is larger than rod 28 so that plenty of room is allowed for the admission of the air to the inner side of the diaphragm.

It is apparent that the steam or motive fluid may enter inlet 11 and will pass through the valve seats 14 and 15 and out of outlet 12. It is also obvious that the motive fluid as it enters inlet 11 may pass through openin '20 into casing 19 around the outer side of multiple diaphragm 2st,

thereby pressing upon the outer side of said diaphragm and that the valve 17 may be adjusted the required distance from valve seats 14 and 15 with great accuracy in the following manner: The valve is adjusted slightly less than the desired distance from the valve seats by means of the threaded tube 26 and the flexible stem composed of the multiple diaphragm 24 and stem 23 attached thereto. When those set slightly less than the desired distance the parts are securely locked in place by lock nut 27. It is obvious that the valve 17 may be adjusted with great accuracy by means of the said nut 35 as it bears on the coiled spring 32 and rod 28.

diaphragms to contract as soon as said steam pressure rises above the atmospheric pressure. The contraction of the multiple diaphragm from this outer pressure draws the valve 17 onto the valve seats 14 and 15,

thereby closing said valve whenever the pressure rises above the desired point.

In this'manner it is apparent that valve 17 may be set at any desired distance from said valve seats and the pressure may be controlled automatically by said diaphragm. The spring 32 allows the multiple diaphragm to move backward and forward with perfect freedom and yet give a resilient adjustment by means of rod 28 and set screw 35, which gives great accuracy to the automatic movement of the parts when under steam pressure.

I claim as new:

1. In a device of the character described, an inlet pipe and an outlet pipe a-bulbshaped partition therebetween valve seats 1n said partition, a double balance valve cooperating with said seats, a stem for said valve; a resilient hollow metal diaphragm on the valve stem, and a steam tight casing around said diaphragm having direct connection with the inlet side of said partition to admit the steam on all sides of said diaphragm. L

2. In a device of the character described, a valvular connection for the inlet and outlet pipes, said valvular connection consisting of a bulb-shaped partition therein having valve seat openings, a double valve mounted in said openings having a suitable stem, a multiple hollow diaphragm on said stem, a steam tight casing inclosing said diaphragm and having direct connection with said valve on its inlet side to admit the steam under pressure to all sides of said diaphragm, a

rod extending through said multiple diaphragm, a spring on the end of said rod, and a set nut to adjust the pressure of said spring.

3. In a device of the character described, a valvular connection for the inlet and outlet pipes, a partition in said valvular connection having valve seat openings, a double valve mounted in said openings having a stem, a plurality of resilient hollow diaphragms on said stem, a steam tight casing inclosing said diaphragm and having direct connection with said valve on its inlet side, a tube having an opening therein to admit the atmospheric pressure to the inside of said diaphragm, and means for adjusting the expansion of said diaphragm.

4. In a device of the character described, a valvular connection 10 for the inlet 11 and outlet 12, a partition 13 having valve seat openings 14 and 15 therein, a valve 17 mounted in said openings having a stem 23, a series of hollow diaphragms 24 attached to said stem, tubes 26 and 30 attached to said diaphragm, a steam tight casing 19 having opening 20 admitting to the inlet side of said valve, a rod 28 extending through said multiple diaphragm, a spring 32 and plug 33 on the outer end of said rod and a set screw 35 bearing against said plug, substantially as and for the purpose specified.

5. In a device of the character described, an inlet port and an outlet port, a partition therebetween, valve seats in said partition, a double balance valve cooperating with said seats, a stem for said valve, a resilient hollow metal diaphragm on the valve stem, a steam tight casing around said diaphragm having direct connection with the inlet side of said partition, and double adjusting means for accurately setting said diaphragm to actuate said valves.

6. In a device of the character described, a double seated valve casing, inlet and outlet ports therein, a double valve cooperating with the seats of said casing, a diaphragm connected to said double valve, a steam tight housing inclosing said diaphragm, and having direct communication with said inlet, an element effective on the lower end of said diaphragm to roughly adjust the latter, and

a second element effective on the upper endthereof to constitute a fine adjustment.

8. In a device of the characterdescribed, a double seated valve casing, inlet and outlet ports therein, a double valve cooperating with the seats ofsaid casing, a diaphragm connected to said double valve, a steam tight housing inclosing said diaphragm, and having direct communication with said inlet, a hollow member threaded in said diaphragm to adjust the latter, a lock nut to set said hollow member, a tubular member threaded on said hollow member and having a set screw in its lower end, a rod connected to said diaphragm and extending through said hollow member into said tubular member,

and a coil spring, in said tubular member 15 name to this specification in the'presence of -20 two subscribing witnesses.

' THOMAS M. WILKINS. Witnesses:

A. W. KETTLE, P. SUGDEN. 

